Quasi-2D spin-Peierls transition through interstitial anionic electrons in K(NH₃)₂

This article describes a study on a novel electride, K(NH₃)₂, which exhibits a quasi-2D spin-Peierls transition influenced by interstitial anionic electrons. Researchers from Nanjing University utilized advanced crystal structure prediction and first-principles calculations to explore this material under moderate pressures. They discovered that electron-phonon interactions and electron-electron correlations in this material could lead to unique quantum phenomena such as zigzag-type anti-ferromagnetism and lattice dimerization under higher pressures, suggesting potential applications in magnetic interactions and charge density wave exploration.

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